8 material differences · fewer than 12
Tractor oneHermann Lanz D 6341974–1978No measured PTO figureTractor twoLamborghini R-235 (DT)1972–1989No measured PTO figure
Which should you choose?
Read our verdict on the D 634 and the R-235 (DT) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
8 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | D 634 | R-235 (DT) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 33.4 hp | 34 hp | — |
| Engine declared | MWM D 226-2 | LAMBORGHINI DA-982 | differs |
| Displacement declared | 2.08 L | 1.81 L | +15% D 634 |
| Maximum torque declared | — | 87 lb·ft · 118 N·m | — |
| Transmission | |||
| Top speed declared | 17.5 mph · 28.1 km/h | 15.5 mph · 25 km/h | +12% D 634 |
| Clutch declared | — | Pedal-operated dry double clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | — | 4.3 gpm · 16.2 L/min | — |
| Rear PTO speeds declared | 580/1120 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,924 lb · 1,780 kg | 3,417 lb · 1,550 kg | +15% D 634 |
| Wheelbase declared | 81.9 in · 2,080 mm | 66.9 in · 1,700 mm | +22% D 634 |
| Length declared | 129.9 in · 3,300 mm | 116.9 in · 2,970 mm | +11% D 634 |
| Width declared | 59.8 in · 1,520 mm | 57.9 in · 1,470 mm | — |
| Ground clearance declared | 13.0 in · 330 mm | 16.5 in · 420 mm | +27% R-235 (DT) |
| Fuel tank declared | 37.0 qt · 35 L | — | — |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
Hermann Lanz D 634 sources
- Source: Traktorenlexikon, “HELA D634”
Lamborghini R-235 (DT) sources
- Source: Traktorenlexikon, “Lamborghini R 235 (DT)”